If you wish to send email messages using an e-mail address with your own domain name, make sure that the company will provide you with access to their SMTP server. The aforementioned is the software system allowing email messages to be dispatched. SMTP is an acronym for Simple Mail Transfer Protocol and it handles all outgoing emails from apps, webmail and contact forms. When a message is sent, the SMTP server checks with all of the DNS servers globally where the emails for the receiving domain name are handled and as soon as it obtains this information, it creates a connection into the remote POP/IMAP server to check if the recipient mailbox is out there. If it does, the SMTP server directs the message body and the receiving server sends it to the mailbox where the recipient can open it and read it. Without having a SMTP server on your server, you won't be allowed to mail out emails at all.